Stainless Steel 310 Annealed vs 310 Cold Worked
Stainless Steel · 310 temper comparison
310 Annealed and 310 Cold Worked are two conditions of the same stainless steel grade, 310: Annealed versus Cold Worked. The chemistry is identical, so every difference below comes from the condition. 310 Cold Worked is the stronger of the two: yield strength 520 MPa (75.4 ksi) against 305 MPa (44.2 ksi) for 310 Annealed, about 70% more; tensile strength follows at 860 MPa (125 ksi) vs 650 MPa (94.3 ksi). In exchange, 310 Annealed is the more ductile: elongation 45% versus 18% for 310 Cold Worked, and 310 Cold Worked is harder (250 HB vs 150 HB).
310 AnnealedChoose it when the part is bent, formed or impact-loaded.
310 Cold WorkedChoose it when strength drives the design.
310 Annealed vs 310 Cold Worked: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all stainless steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 158 GPa22.9 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.9 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,450°C2,642 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 14.2 W/m·K8.2 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 15.9 µm/m·K8.8 µin/in·°F · Latent Heat of Fusion 280 J/g120 BTU/lb · Max Service Temperature (continuous) 1,050°C1,922 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 2.2 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.08 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 60 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 62 MJ/kg26,655 BTU/lb · Embodied Carbon (primary production) 5.5 kg CO₂/kg · Embodied Water 210 L/kg25.2 gal/lb · Typical Recycled Content 45%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
310 Annealed vs 310 Cold Worked — frequently asked
Is 310 Cold Worked stronger than 310 Annealed?
Yes. 310 Cold Worked has a typical yield strength of 520 MPa (75.4 ksi) against 305 MPa (44.2 ksi) for 310 Annealed — about 70% more. Tensile strength is 860 MPa (125 ksi) vs 650 MPa (94.3 ksi).
Which condition does FabDigit quote by default, Annealed or Cold Worked?
Solution Annealed is the default 310 condition in the FabDigit quote flow (neither Annealed nor Cold Worked). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, 310 Annealed or 310 Cold Worked?
310 Annealed. Its machinability rates fair (35/100) against poor (30/100) for 310 Cold Worked; for welding the order is 310 Annealed first (good, 65/100) then 310 Cold Worked (good, 60/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 310 Annealed and 310 Cold Worked side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.